Brake-beam.



No. 832,669. PATENTED OCT. 9, 1906.`

C. G. HAWLEY.

BRAKE BEAM.

APPLIQATIONHLED JULY27,1906.'

UNITED STATT-is. PATENT l' OFFICE.

CHARLES GILBERT HAwpEY, C F CHICAGO, ILLINCI'S. i

` 'BRAKE-BEAM.

Specification-of Iiqtters Patent. Application tiled July 27,1906. Serial No.' 328,074.

Patented-oct. 91'906.

To all whom ttm/ay concern.- f

Be it known that I, CHARLEs GILBERT I I-IAWLEY, a citizen of the United States, and

i brake-beams, and has special reference to imf f aresident of'Ohicago, county of Cook, and s State of' Illinois, have invented a certain new,

useful and Improved .Brake-Beam, -of whichfollowing 1s a full, clear, and exact de-L scription, such as will enable others skilledin the the 'art to which it appertains to make and use the same.

My invention 'relates to improvements in rovements in brake-beams of that class Ellown as single-beam brake-beams.

Single-member beams usually comprise a brake-shoe and a ulcrum bearing beam or member which is `formed 'romt a rolled shaped or flanged beam. Such brake-beams are strong and are favored by railroad operators by reason of their vlow oo st. Some such beams are made from ordinary rolled I- beams. In such cases the compression and tension lcords or portions of the beam are parallel. In other cases the compression cord of the beam is made strai ht and the tension cord or portion is bowe this being done by forcing apart the Han es ofthe beam at the middle. A beam t us treated is greatly strengthened; but the spreading of the anges involves much labor and the eX- penditure of great force.

The object of my invention is to provide la single-member brake-beam which may be manufactured at less cost than those above described.

To this end my invention consists in a brake -beam which is characterized by a straight compression member and a bowed orbent tension member united at their ends in such manner as to constitute a single integral member.

In carrying my-invention into effect I employ two structural or rolledbars or beams, one straight and the other bowed, and unite the ends thereof by weldingtheirweb ortions together, all as hereinafter descri ed,- and particularly pointed out in the claims.

My invention will be more readily understood by reference to the accompanying drawings, forming a part of this spec'iiication, and in which* Figure I-illustrates a brake-beam embodying my invention. Fig. II is a detail view illustrating the ends of the component members of the beam in readiness for welding. Fig. III is an enlarged cross-section of "vention, in which that of Fig. I, but modifiedas to themanner of forming and joining the end web portions of thecomponent arts. Fig.'V is an enlarged section on the line V V` of Fig. IV. Fig. VI illustrates a' urth r he webs of the two parts are laipped'and welded. F' VII is an enlarge section on the line VI VII of Fig. VI. Fi VIII is an enlarged section on the line V I VIII of Fig; VI.

The beam illustrated in Figs. I, II, and III comprises two beams or members 2 and 3, which are T-shaped in cross-section. 2 isl the compression member of the beam, and 3 the modification of my in` the nd of the beamen the' une 11i In of" Fig. I. Fig. IV illustrates a beam like unto" tension member, the latter being bent iand equipped with a strut 5 and a fulcrum-piece 6. The combination strut and ulcrum may lbe of any suitable form adapted to t the portions or members 2 and 3. For the buttweld of Fig. I, I may substitute the scarfwel`ds 6 6 (illustrated in Figs. IV and V,) which quite -as effectively unite the compression and tension members of the beam. Again, a'beam composed of like membersto wit, T-shaped beams 7 and8 (see Fig.VI)- may beI made by lapping the webs thereof at the ends and uniting the engaging surfaces of the webs by the process of Welding. I prefer that the welded snrfaces shall be limited to -the straight portions of the members 7 and 8, as indicated by dotted linesl 9 in Fig. VI. In manufacturing this beam vI prefer to relatively oiIset the web ends of the members in order that the webs lmay occupy the same plane at the middle ofthe beam. l

It will be evident that the straight comression member and the bent tension member may be of different forms in cross-section and generally that any two webbed or flanged members may be employed in making up my novel single beam. Many of these forms I have already developed; but of all I IIO prefer the sblsta'ntially I-shaped beam here- 1nl illustrated..y I do not, howeve1} my invention thereto.

4Having thus deserlbed my invention, I claim as new y and {desige tofecure by Letters,

confine web ends of the `comdprssion member,- substanti-allyas describe 2. In' -a brake-beam of the sin le-beam h tension members Welded together atthe ends and type, T-shaped compression an 'sing a N'I' -shaped s read a art atv thevmidde 'substantial as Srib y 3. In a brake-beam-'of v'the .single-beam ^t e, a straight flanged beam, in' combina-,

t1o n with a bent lianged beam said beams bemg welded together at the ends and spread apatda vthe 'midd1e, substantially as, I de? ,sen e f presence of two subscribing Witnesses.

. CHARLESL GILBERT HAWLEY. kWltnesses:

A. NELSON.

In testimony WbereofI'bave herellmto set d my handthis 19th day of Ju1y,v`1906, in the 

